Mountain known by the Tillamook Tribe as "the place of the supreme deity."

A massive sea stack famous for its appearance in The Goonies.

Where Nor'easters go to die.

The lush coastal city of Astoria is riddled with forgotten secret sidewalks.

Giant granite rocks standing end-to-end like a train of circus elephants.

400 million-year old limestone caverns nestled in the Ozarks served as shelter and a hideout for cultures throughout North American history.

Quirky water tower advertises the long-gone Brooks Tomato Products Co.

Fresh wooden posts have been added to ancient holes to recreate a primitive henge clock.

Once one of the world's great cities, Cahokia was a place of religious worship, trade and mass human sacrifice before being mysteriously abandoned.

What was once a presidential estate is now an exotic menagerie and home to the Budweiser Clydesdales.

This titanic oil company sign is a reminder of the Americana boom of the 1970s and also its commoditization.

This is not your typical jungle gym.

Less a museum than a bizarre fantasy world created by artists and engineers.

The Old Courthouse takes visitors on a captivating trip through St. Louis' timeline.

The world's tallest statue of an American hero.

Tracks near this Texas nature site were once thought to support the Creationist belief that man and dino coexisted.

Three hundred years of preserved Spanish colonial history in San Antonio.

An enormous pink granite batholith, long attributed with spiritual powers by the Tonkawa Indians.

An emerald-green grotto just a short trip from Austin.

Free public park and gardens filled with peacocks and peahens.

A grove of colossal man-made flowers built to collect the sun's rays.

Life's work of sculptor Elisabet Ney remains preserved in her last studio.

A former electrical substation is now home to an eccentric junk art masterpiece.

One part antique store, one part curiosities hodge-podge.